debugging the ci-build script

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14960 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
still debugging the ci-build script

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14961 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
still debugging the ci-build script (take 3)

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14962 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02